there is a noise like some kind of pump running seems to be coming from under trunk or in gas tank? rns for about 3 min any ideas?

Asked by Feb 21, 2015 at 09:04 PM about the 2004 Buick Park Avenue

Question type: Maintenance & Repair

when starting car sometimes a noise from the back end (under trunk, gas tank) sounds
like a air compressor running or some kind of pump what could this be?
Thanks

3 Answers

24,195

Air pump for the cars ai rride suspension.

1 out of 1 people think this is helpful.
Best Answer

Where is the pump located? Thanks again

1,005

Passenger side rear above the muffler, it is an air compressor. As long as it stops running in a few minutes it's normal. If you find out running non stop, rust has decayed the integrity of the unit and it's a $500 min replacement.

1 out of 1 people think this is helpful.

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